Vitamin D in? Vitamin D2, D3?

What is the vitamin D in Cod Liver Oil?

Answer: Vitamin D3.

Cod Liver Oil is a vitamin D3 supplement.

Vitamin D3 OUTSIDE of the human body.

Here's some quotes from the link:

"What forms of vitamin D are present in fish and fish livers?

It is obvious from what has been written above that both vitamin D2 and vitamin D3 are available for fish in their diet, but vitamin D2 is almost absent in fish. The only form of vitamin D that has been identified at significant levels in fish oils (both body and liver) is vitamin D3."

"The Mystery Why Fish Liver Oils Only Contain Vitamin D3

What remains a mystery to scientists and marine experts is why the only form of vitamin D that has been identified in fish oils is vitamin D3. You would expect vitamin D2 would be present especially if vitamin D2 produced in phytoplankton was concentrated in the food chain. The main explanations for this observation include:

Fish have the ability to discriminate between vitamin D2 and vitamin D3 and therefore only concentrate vitamin D3 in their visceral oils.
Alternatively, fish or zooplanktons that consume phytoplankton have a similar capacity as Paramecium to convert the side chain of vitamin D2 into the side chain of vitamin D3.
There is also a possibility the bioavailability of vitamin D2 is lower than for D3 in fish." (End of quotes)

http://evclo.com/faqs/vitamin-d2-vitamin-d3/

Does EVCLO contain both Vitamin D2 and D3?

Does EVCLO contain both vitamin D2 and vitamin D3? July 7, 2014 by admin “Cod fish only contains vitamin D3. There is no vitamin D2 in either cod fish or cod liver oil.” -Dr. Jacob Exler, Nutritionist, USDA...

EVCLO.COM|BY ADMIN